Western Energy Imbalance Market (WEIM)
PG&E
Four Western utility executives participating in an Energy Bar Association webinar presented their reasoning for why they ultimately chose either SPP’s Markets+ or CAISO’s EDAM, with some eyeing the creation of a full regional transmission organization in the future.
© RTO Insider LLC
The West-Wide Governance Pathways Initiative is preparing to file the incorporation documents for the independent RO that will govern CAISO’s energy markets, while funding challenges remain.
© RTO Insider LLC
FERC approved CAISO's Western Energy Imbalance Market implementation agreement with Imperial Irrigation District.
DOE
Trade organizations for utilities and large energy consumers seek to intervene in the lawsuit filed in the 9th Circuit Court of Appeals challenging the Bonneville Power Administration’s decision to join SPP’s Markets+ instead of CAISO’s EDAM.
CAISO
CAISO’s Western Energy Imbalance Market provided participants with $422.44 million in economic benefits during the second quarter of 2025, up 15% compared with the same period year earlier despite no change in membership.
West-Wide Governance Pathways Initiative
The West-Wide Governance Pathways Initiative will run its stakeholder processes separately from CAISO’s until the effort's regional organization is formally launched in 2028, even in areas of overlapping interest.
CAISO DMM
California’s fastest-growing energy resource — battery storage — is earning less net revenue each year, while capacity is forecast to continue to boom.
Andre m, CC BY-SA 3.0, via Wikimedia Commons
The author behind the bill that would allow CAISO to relinquish market governance to an independent RO has delayed a hearing after several organizations withdrew support for the proposed legislation.
PacifiCorp
Portland General Electric told Oregon regulators that after decades of electricity flowing from north to south through its system during the summer, the flow on a typical summer day has reversed.
CAISO
Out-of-state wind integration, merchant transmission development and the WestTEC planning effort are all factors influencing CAISO’s interregional transmission planning.
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